<template>
  <div class='container'>
    <el-dialog
      title="新增标签"
      :visible.sync="addTagsDialogVisible"
      width="20%"
      @close="dialogClose"
      >
      <el-form label="right" label-width="80px" :model="addForm" :rules="rules" ref="addfrom">
        <el-form-item label="所属学科" prop="subjectID">
          <el-select placeholder="请选择" v-model="addForm.subjectID">
            <el-option
              v-for="(item, i) in subjectList"
              :key="i"
              :label="item.label"
              :value="item.value"
            ></el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="标签名称" prop="tagName">
          <el-input v-model.trim="addForm.tagName" placeholder="请输入标签名"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addTagsDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="add">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  created () {},
  props: {
    subjectList: {
      type: Array,
      required: true
    }
  },
  name:'AddDialog',
  data () {
    return {
      addTagsDialogVisible: false,
      addForm: {
        subjectID: null,
        tagName: ''
      },
      rules:{
        tagName: [{ required: true, message: '请输入标签名称', trigger: 'change' }],
        subjectID: [{ required: true, message: '请选择', trigger: 'change' }]
      }
    }
  },
  methods: {
    dialogClose () {
      this.$refs.addfrom.resetFields()
    },
    add () {
      // 预验证
      this.$refs.addfrom.validate(valid => {
        if (!valid) return
        this.$emit('update',this.addForm)
      })
    }
  }
}
</script>

<style scoped lang='less'>
.el-select {
  width: 100%;
}
</style>
